Siemens SCALANCE X-200 Specifications download pdf (Page 30)

Connecting

4.1 Power supply

SCALANCE X-300

30 Operating Instructions, 01, A5E01113043

Table 4-1 Pin assignment for the power supply

Pin number Assignment

Pin 1 L1+ 24 V DC

Pin 2 M1

Pin 3 M2

Pin 4 L2+ 24 V DC

Warning

The IE Switch X-300 is designed for operation with safety extra-low voltage (SELV). This

means that only safety extra-low voltages (SELV) complying with IEC950/EN60950/

VDE0805 can be connected to the power supply terminals.

The power supply unit for the IE Switch X-300 power supply must meet NEC Class 2, as

described by the National Electrical Code(r) (ANSI/NFPA 70).

The power of all connected power supply units must total the equivalent of a power source

with limited power (LPS limited power source).

If the device is connected to a redundant power supply (two separate power supplies), both

must meet these requirements.

The signaling contact can be subjected to a maximum load of 100 mA (safety extra-low

voltage (SELV), 24 V DC).

Never operate the device with AC voltage or DC voltage higher than 32 V DC.

Caution

If IE Switches X-300 are supplied over long 24 V power supply lines or networks, measures

are necessary to prevent interference by strong electromagnetic pulses on the supply lines.

These can result, for example, due to lightning or switching of large inductive loads.

One of the tests used to attest the immunity of devices of the IE Switches X-300 to

electromagnetic interference was the "surge immunity test" according to EN61000-4-5. This

test requires overvoltage protection for the power supply lines. A suitable device is, for

example, the Dehn Blitzductor VT AD 24 V type no. 918 402 or comparable protective

element.

Manufacturer: DEHN+SÖHNE GmbH+Co.KG, Hans-Dehn-Str.1, Postfach 1640, D-92306

Neumarkt, Germany.

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Siemens SCALANCE X-200 Specifications Page 30